What you're seeing on the contact side of the pill isn't the driver, it's the contact board. The driver is nestled between the contact board and MCPCB the LED is mounted on.
It looks like some kind of Sandwich Shoppe gear (which it most likely is).
It does have SOB on the board (Son of Buck). Not sure if they used a separate contact board.
The only gear from them I've built was with the GDuP (3 modes) which used one (contact board).
If your light is single mode, my guess is that it's a SOB.